Car, air, and electric coupler system



March 27, .1928.

E. A. LARSSON AIR, AND. ELECTRIC COUPLER SYSTEM CAR ',4

Filed April 12, 192'? Y' gowanron Exe/v51' ness Patented Mar. 27, @2%.

UNHT

ERNST A. LARSSON, F MANSFIELD, OHI, ASSIGNOR TO THE OHI BRASS COMPANY, OF MANSFIELD, OHIO, A CORPORATION OF NEW JERSEY.

CAR, AIR, AND ELECTRIC COUPLER SYSTEM.

Application led April 12, 1927. Serial No. 183,145.

My invention relates to car, air and electric couplers and particularly to that class of coupler in which the mechanism for the three classes of couplings named are combined in one.

The object ofv my invention is to provide a combined car, air and electric coupler in which the three classes of couplings are made automatically upon impact of two cars when brought into coupled relation, whereby the air lines, which are, as a rule, used in coupling the air brake system, and the electric circuits for operating the cars and for various other uses. will be coupled and the cars themselves will be mechanically held in coupled relation.

Another object of my inventionis to provide means whereby two cars coupled by my combinedv car, air and electric coupler may be uncoupled at will of the operator from a station in or on either of the coupled cars.

Other objects will appear as I further def scribe my invention herein.

My invention resides in the new and novel combination, construction, relation and co- -opcration of the various parts hereinafter fully described and shown inthe accompanying drawing.

In the drawing: v

Fig. 1 is a schematic drawing, showing the ends of two cars in coupled relation and in condition for operating the cars.

Fig. 2 shows the relation of pipes and ports of the uncoupling control valve while the operator is in the act of eil'ecting an un- .coupling l Fig. 3 shows the relation of the pipes and ports in connection with the brake line valve, taken onthe line 3 3 of Fig. 1 when the cars are in coupled and operative relation.

Fig. 3* shows the relation of the Vports and pipes for. the same valve as in Fig. 3, but when the cars are in uncoupled or single operating relation, and shows the brake line valve as closed. c

Fig. 4 shows the. relation of the pipes and ports controlling the uncoupling cylinder and taken on the line Ll-lof Fig. l when the coupled Icars are 4in operative relation.

Fig. 4A shows the relation of the pipes and ports in connection with the same valve shown in Fig. 4 when the cars are in uncoupled relation and operating as single units.

Fig. 5 is a vertical section of a combined check, feeder and bleeding valve taken on the line 5--5 of Fig. 1.

Fig. 6 shows a section of a check valve which l may employ in the reservoir line ot the brake system, which will automatically open on impact and automatically close on uncoupling of the cars.

Fig. 7 is a face view of my combined car, air Vand electric coupler.

Cars at the present day are very often, if not usually, equipped with an air brake system, which may require one or more main conduits, and which must be connected when two lcars are coupled together for single operation. l 4

The system generally employed is that requiring what is known as a reservoir or main supply line and a brake line, which, l

if opened to atmosphere intentionally or unintentionally, will cause an application of the brakes, and when opened to atmosphere unintentionally will produce what is known as an emergency brake application.

Gars are also equipped with electric circuits for the operation of the motors, lights, heater, signals. etc., and these circuits are usually connected on 'two coupled cars so as to be under control of the operator on4 the forward car.

My invention provides means for automatically opening control valves in the brake and reservoir line upon the coupling of two cars, and the automatic closing of the reservoir line when the cars are uncoupled, either intentionally or accidentally, but the brake line control valve is not'closed,. only when closed by the operator.

lf two coupled cars should separate accidentally, the brake line would be open to atmosphcre and an emergency application of the brakes applied, but when the. cars are separated intentionally the operator closes the control valve in the brake line prior to the'separation of .the cars.

My invention also provides for the automatic connecting of the electric circuits between two cars upon impact. In order to render the contacts on the face of the coupler dead when the cars are in an uncoupled relan will tion, I provide a switch, which is interposed in the circuits adjacent' to the contacts, which tained within the cableI 13. The cable 13 is under control of the operator and is enters a rotary type switch 111 ot' the oropened prior to his separating the cars and dinary well known type. in which there is simultaneously with the closing of the conmounted a rotatable drum 15 carrying a conl trol valve in the brake line, and also prior tact which connects the stationary contacts t to or simultaneous with the operation of the 1G and 16 when the switch is in a closed uncoupling mechanism for the car coupler. position, and electrically disconnects the con- In the preferred embodiment ot' my intacts 16 and 16 when the switch is in an vention, l provide a combined car. air and opened position. and the various wires 12 electric coupler,. which mayxbe of various may be connected to the contacts 16 and 75 constructions, but l have shown one conwires leading from the contacts 16 to the struction, the face of which is shown in Fig. various apparatus 'on the car. 'lhe opera- 7 and which comprises a car coupler 1, the tion of the switch 14 is under control of the electric coupler 2, the air brake couplers 3 operator when it is desire-d to effect an unand 4 and the air control line 5. The car coupling, but the connecting of the circuits couplers are each provided with a hookby the switch 14C is automatically effected Shapd COUPYlg mmbe mld it SPIDQ 7, upon the coupling of two cars, as will be yieldingly holding the hooks in'a coupled inten explained, relation and with a pivotally mounted cam The reservoir and brake line circuit/s be- 20 8 provided with a handle 9 by means of tween the two cars are made and completed B5 which the cam can be rotated. and such upon impact ot the cars. ln the face of the rotation will cause a separating movement car coupler 1 are provided the air couplers of each coupling hook. 1t will be noted that 3 and 4 for the reservoir line and brake the operation of a single cam 8 acting on line respectively. rllhese couplers are proboth hooks will cause a complete uncoupling. vided as 'for use with yieldingr rubber gas- 9" When two cars are brought together the kets, which Contact and maintain in air hooks yield and when in iinal coupled relatight connection between the air couplers tion the springs 7 move the hooks back to when in coupled relation. interposed in the DOPIIml 01' COllpled relation, 111 WlliCl COldireservgiir' line of each Car is 3, Check valve tion the hooks on the two cars are intcrdevice B, one form of which is shown in de- 95 locked. tail in liig. 6. The check valve device. as

To eifect a movement of the uncoupling `shown schematically in Fig. 1, is preferably cam 8, each coupler is provided with a pneupositioned upon the coupler 1 and .is shown ."matically operated uncouplingl cylinder and with a projecting stein which contacts with M piston A, which comprises a cylinder and a similar stem on a cooperating car. and w piston therein with a stem which engages opens the check upon impact of the cars. the lever 9, and it is normally held in a 19- thus establishing a connection of the reser- 'tracted position by the spring 10. rllhe lever voir line between the two cars, and this check 9 can be used for manually uncoupling the automatically Closes under Spying action 40 hooks 6 when desired. The car coupler as when the Cars are Separated, 105

- described above is shown more in detail in En Fig, .6, the device therein Shown conn Patent 1,223,223, dated April 17, 1917. lt prises the body member 17 with a check 18 prefer to make the uncoupling device 1 of and heid against the Seat, 19 by means of such capacity that a single device A is cathe spring 20. Slidably mounted in the pable of effecting an uncoupling of two cars, body i7 and projecting therefrom is the im therefore, if there is any GDGHCY Undef stern 21. held in a forward position by a Unusual COHODS for' the uncoupling mecllspring 22, and the stem 21 has in its forward anism to not operate. the combined elort of end the coupler 3 in which is mounted the i711@ 13W() UDCOUpllIIg (leVlCGS Will l0@ quit@ rubber gasket 23 Vvhgn tw() Cars C0111@ i0- Sure t0 effect an UDCOUpling. if desired, 0f gather the gaskets 23 Contact and the cou- 30 course, each uncoupling device A can be pler 3, together with the stem 21. is moved made Of Small ellOllgh CpCiiy Such that ODG backward and the Stem engages the Check device will not under normal conditions 18 thereby opening the same against the cdect an uncoup1ing,but the combined eort s ring pir-essuie 20' and permitting air to 0f the tWO doViCcS will effect an uncouplng. ididw through the device and from car to car l2 rlhe electric coupler 2 is preferably of the from the reservoir pipe 24C. As soon as the butt end type, as shown in Patent 1,300,789, cars are separated, the springs 20 and 22 issued .April 15, 1919, in which the various act to close the check 18 and to advance the contacts 'i1 are yieldingly held in an adstein 21.

vanced position, and when two cars are couit provide an actuating device. C for mov-i 125 tacts of one car connect with ing the switch to its open or closed position correspo i contacts on the other car and by means of air pressure taken from the resare heldin ntact by the yielding action of ervoir line 24. This device comprises a the contacts. These contacts are connected double ended cylinder 25 with a double pis- .5 t0- thc various train line circuits 12 conf ton and connecting rod 26. The connecting R3" tion when two cars are coupled.

Leeasoa rod constitutes a rack which engages with a. pinion 27, which is fixed to the shaft 28 for operating the drum 15 of the switch 14. With the device C and its parts in the position shown schematically in Fig. 1, the switch 14 is in its closed -or operative posi- To the left hand end of the cylinder 25 is a combined supply, bleeder and check valve D, one form of which is shown in detail in Fig. 5.

The device as shown in Fig. 'comprises a body member 29 inwhich is mounted the double check valve 3() and adapted to engage' the seats 31 and 32. Whenever pressure enters the pipe 33, which leads from the check valve B, the double check 3() is held against the seat 32 and air Hows through the pipe 34 to the left-hand end of the cylinder 25. moving thev pistons' toward the right-hand end of the cylinder. This rotates the pinion 27 and the drum l5 of the switch to its closed position, thereby connecting the circuits of the car to the contacts 11 of the electric coupler. It will be noted that whenever two cars are brought together in coupled relation that as soon as the check valves B open, air Will be permitted to flow from the reservoir line 24, through the pipe 33 to the. device D, and from there to the actuating device C, thereby moving the switch 14 to its closedposition.

Secured to the lower end of the shaft 28 is a valve E in which the valve plug 35 is provided with a port 36 for controlling t-he How o air through the brake pipe 37 and port 38 for controlling air to the uncoupling c vlinder Althrough the pipe 39. The ports 36 and 38 are set at right angles to each other such that the pipe 37 is open when the pipe 39 is closed, and the opening and closing,- or vice versa, of the pipes 37 and 39 is substantialty simultaneous with each other and with the operation of the switch 14, and when the valve E is maintaining the pipe 37 in an open position, the switch 14is in a closed position and vice Versa. lt will be noted, however, that the port 36 is substantially closed before the port 38 is opened, thereby eleeting a closing of the pipe 38 and an opening of the switch 14 substantially prior to the tlooding of the line 39 and the operation of the car uncoupling mechanism. The position of the ports 36 and 38 when the cars are in an uneoupled relation and operat-I ing as single units, are shown respectively in Figs. 3A and 4^. v -f Leading from the port 38 in Fig. 4 will be noted a small port 40 connecting with the port 38, which in turn connects with the pipe 39 by the port 41 such that when the mechanism set as shown in Fig. 1, any air which might tend to leak into the pipe 39 cannot produce a pressure therein and operate the device A, as such air would pass to atmosphere through the port 40.

The combined valve E could, of course, be made into two valves operating from the shaft 28 if desired.

It will be recognized that `since the valve E is connected to the shaft 28, the shaft 28 is operated by the actuating device C, which in turn is operated upon the coupling or bringing together of two cars, that the port 36 vin the valve E will be automatically opened when the cars are brought together, thereby automatically establishing communication ot' the brake line 37 on two cars upon impact of the cars. Mounted in the reservoir .line 24 is the usual hand operated valve 42,

which is normally left open, but can be closed manually. Also, in the line 33 is a hand operated valve 43, which is normally in an open position, but can be manually closed when desired.

Mounted on the shaft 28 is a handle 44 by means of which the shaft 28 can be operated manually when desired. l/Vhile the switch 14 and connected mechanism could be incorporated or mounted upon the coupler l, I prefer to mount the switch 14 and connected mechanism upon the car body adjacent the coupler 1.

lVhen it is desired to effect uncoupling, the operator finds it necessary only to operate the valve F, which is under manual control. The valve in Fig. 1 is shown in an ott position. In Fig. 2 the ports are shown in an on position or position effecting uncoupling, and after an uncoupling has been eTected the valve F returns to or'is returned with its ports in the position shown in Fig. 1. The valve F is connected to the reservoir line 24 by means of the pipe 45v and after leaving the valve F the pipe connects to the right-hand end of the cylinder 25 by means of the pipe 46, and to the lower end of the device D by means of the pipe 47, and the pipe 45' also connects to the control pipe 48, which in turn connects to the coupler 5.

When the operator moves the valve F to the position shown in Fig. 2, the port 49 establishes a passage through the pipe 45 for the air from the reservoir line 24. and the air flows through the pipe 46 to the righthand end of the device C, 'tending tol move the pistons to the left, but there is air pres sure in the left-hand end of the cylinder equal to the air pressure in the right-hand end of the cylinder, therefore, to relieve the air pressure in the left-hand end of the cyl inder 25, air flows through the pipe 47 and acts upon the piston 50 of the device D (see Fig. 5), and raises the stem and checks 30 until the check engages the seat 31, thereby shutting ofil the How ot air from the pipe 33 to the left-hand end of the cylinder 25. and raises the check off of the seat 32 and establishes an air passage from the cylinder 25 to atmosphere, through the pipe 34 and air vent luc lihis permits the air pressure in the right-hand end ot the device C to move the double piston to the left, thereby operating the pinion Q7 and the shaft Q8, which opens the switch 14, closes the port 36 and then opens the port 38, as shown in Figs. 3^ and 4^- respectively, and this permits air to flow from lthe pipe through the pipe 48, the port 38 and the pipe 39 to the uncoupling device A. Assuming that the operator is stationed in car 1, it will he apparent that'these operations will all take place in car 1 first. ln order to effect the same uncoupling operation in car 2, the air passes through the pipe 48 of the car 1, through the air oo uplers 5 on the two'cars and `through the pipe 48 on car 2 and irom there to the actuating mechanism d and l on car 2, and thereby produces the same operation ot the mechanisms il and as on car 1, and thereby ettecting the opening of the switch 14, the closing of the port 36 in the brake line. 37, and the opening of the port 38 and the operation of the uncoupling device A all on car 2.

The valve F is provided with ay port 52, which prevents the building up of pressure in the line 48 when the cars are in coupled' position.

The port 38 being preferably at the small end of the valve E is of relatively small capacity, therefore, air enters the cylinder A at a very slow rate compared with the flow of air through the pipes 48 on the two cars, and, therefore, the vdevice A may not operate until after the switch 14 and valve E on car 2 have operated. Should the couplers 1, forany reason, not operate under the action ot the device A on one car, then when the device on the second car comes into operation, the combined etiort ot the two cylinders will he sufficient to eti'ect :in nncoupling.

.l show a ley-pass 53 and a valve 54 therein around the valve lE. rlhis valve 54 is normally in a closed position, but can be used to render the hrake line cective in emer- ,cjency should the device C, or its connected mechanism, hecome inoperative Jfor some tx. Gni ,it will he understood that the two ends et ueach car may be equipped alike and a ot cars may consist ot two or more cars which couple automatically `upon impact and., it desired, the hrake pipe valve E can he closed on all coupled ends of any number Aoi? cars from any control valve lt", it desired, hv connc ng the pipe 45 or 48 on the two ends o car hy the pipe 55 which will permit i, i ging: with air pressure the coniol pin. 'between each pair of coupled cars. i? vssired to have only two adiacent co ears nncoupled then the hand valve 5i when operi-- adgacent co closed and the valve F uncouple only the two ends,

nceaeoa What ll claim is:`

1. ln a car, air and electric coupling system, electric circuits, a switch in said circuits, air-brake lines, a valve in each of the lines, a car coupler-,a pneumatic uncouplingr device for the car coupler, a pneumatically operated device to. move the switch to its open position and simultaneously one of the said valves to its closed position, pipingI connecting the last said actuating device and one ofthe air-brake lines, a controlling valve in said piping, piping connected to the, uncoupling device under control of the said controlling valve and means interposed in the last said piping to control the flow of air therein such that the air to the said unconpling device is permitted to fiow thereto when the switch moves to its open position.

2. In a car, air and elect-ric coupling system, a switch to control one or more electric circuits, air-brake lines; a valve in one of the lines; a car coupler; pneumatic uncoupling mechanism for the car coupler;

i infr to the uncou lino' mechanism to su ply air thereto; a valve to control the How ot air therein; pneumatically operating mechanism to move the switch and the valve in the pi ping to the uncouplingr mechanism to their openposition and the valve in the airhrake line to its closed position; means to cause the switch and valves to operate simultaneously and pipingand controlling means therein to supply air to the first said piping and the second pneumatically operating mechanism at will of the operator.

3. A car, air and electric coupling system comprising a switch to control one orA more electric circuits; air-brake lines; a valve in one of the lines; a car coupler; pneumatic uncoupling mechanism for the car coupler; piping to conduct air to the uncoupling mechanism to supply air thereto, a single pneumatically operating mechanism to move the switch toits open and the valve in the air-brake line to its closed posit-ion; means associated with and controlled by the movement of the single operatingr mechanism to control the air How to the uncoupling mechanism and assure tho closing of the air-brake line valve when the uncouplingr mechanism operates; piping,` to conduct air to the single pneumatically operating mechanism and means in said piping to control the flow of air therein at will of an operator.

4. In a car, air and electric coupling system, a switch to control one or more electric.circuits; a reservoir air line; a valve therein to open upon impact of two cars; a brake air line with a valve therein; a car coupler and pneumatic uncoupling mechanism therefor; pneumatically operating mechanism to operate the switch to its open or closed position and the. brake line valve to its closed or open position respectively;

piping connecting the operating mechanism to th'e reservoir ine to operate the mechanism to close the switch and open the brake line valve when the reservoir line valve opens; piping connecting the reservoir line to the pneumatically operating mechanism and a control valve therein to control the flow of air therein to operate the mechanism to open the switch and close the vbrake line valve; piping connected to the uncoupling mechanism to supply air thereto and under control of the control valve and means associated with the last said piping and controlled by the lnovement of the operating mechanism to assure the switch beingopen and the brake line .valve being closed when the uncoupling mechanism operates.k t

5. In a car, air and electric coupling system, a switch to control one or more electric circuits, a reservoir air line; a Valve therein to lopen upon impact of two cars; a brake air line with a valve therein; a car coupler and pneumatic uncoupling mechanism therefor; pneumatically operating mechanism to operate the switch to its open or closed position and the brake line valve to its closed or open position respectively; piping connecting the operatingmechanism to the reservoir line to operate the mechanism to close the switch and open the brake line valve when the reservoir line Valve opens; piping connecting the reservoir line to the pneumatically operating mechanism and a control valve therein to control the flow of air therein to operate the mechanism to open the switch and close the brake line valve; piping connected to the uncoupling mechanism to supply air thereto and means associated with the last said piping and controlled by the movement of the operating mechanism to assure the switch being 0 en and the brake line valve being closed w en the uncoupling mechanism operates.

6. In a car and air couplin system, a car coupler, pneumatic uncoup ing mechanism therefor, a reservoir air line and a valve to automatically open when the line is connected to a like line on a coupled car, abrake air line and a valve therem, pneumatically operating mechanism for the valve, pipingconnecting the operating mechanism to the reservoir line and under control lof the valve therein to automatically operate the pneumatically operating mechanism when the cars couple to vopen the brake line valve, piping connecting the operating mechanism to a source of air and a control valve therein to control the operating mechanism to close the brake line valve at will of an operator, piping connect-in the uncoupllng mechanism to a source o air and means therein controlled by the movement of the o erating. mechanism to control the supply oi) air to the uncoupling. mechanism andy piping to connect the pneumatically operat ing mechanism on one car with that on a coupled car to cause substantially simultaneous operation of the two pneumaticallyl opratmg mechanisms to close the brake Va VCS.

7. In a car and air couplin system, a

car coupler, pneumatic uncoup ingmechanism therefor, a brake air line and a valve therein, pneumatically operating mechanism for the valve, piping connecting the operating mechanism to a source of air and acontrol valve therein tol control the operating mechanism to close the brake line valve at will of" an operator, -piping connecting the uncoupling mechanism to a source of air and means therein controlled by the movement of the operating mechanism to control the supply of air to the uncoupling mechanism and piping to connect the pneumatically operating mechanism on one car with that on a coupled car to cause substantially simultaneous operation of the two pneumatic operating mechanisms to close the brake valves. 8. In a car and air coupling system a brake and a reservoir air line, a control va ve in each line, a car coupler, a pneumatic uncoupling mechanism for the cou ler, a

pneumatically operatin mechanism or only one of the air line va ves,jpip'ing connecting the operating `vmechanisms on two coupled cars, piping on each car and a valve therein under control of an operator t0 charge the -line at will'of the operator to move the operating mechanism on each car I to close the valve on each car from either car, piping on each car' to supply air to the uncoupling mechanism and means associated with the last said pipingand controlled by the movement of the operating mechanism to prevent air flowing to the-.uncoupling mechanism while the brake line valve is openif' 9. In a car and air coupler system ontwo coupled cars, each car provided'witha train air line and a control valve thereimfa pneumatically operating mechanism for the valve, a car coupler and a pneumaticuncoupling mechanism therefor, piping to supply air to the operating mechanism to operate the same to close the train line valve and a manually operated valve therein to control the access ofair to the operating mechanism, piping to supply air to the uncoupling mechanlsm and connected to the first said piping` between the valve therein and the operating mechanism, means in the piping to the uncoupling` mechanism to prevent the admission of air `to the uncoupling mechanism prior to the closing of ,the Valve in the train air line regardless of the pressure in the piping systems and piping to connect with the same on a coupled car to supply airto the operating mechanism on both cars to operate the sam'e to close the Valves on both cars in the train line and controlled by the manually operated valve on one car,

floo

`matically f double ended cylinder for the' switch and the i' valve in one of the lines, piping connecting v.one end of the cylinder to one of the air lines to move the operating mechanism to close l the switch and open the valve upon impact Y of the cars, piping and a valve therein and connected to the other end of theL cylinder to control admission of air to the cylinder to move the operating mechanism and to move therewith the switch to its open position and the valve to its closed position and piping to connect the opt rating mechanism on two coupled cars to operate the operating mechanism on the two cars from one car and means to uncouple Vthe cars.

11. In a car, air and electric coupling system on two coupled cars, each having a car coupler, pneumatic uncoupling mechanism for the coupler, a train air line, a control valve therefor, an operators control valve, a switch for one or more electric circuits, a single pneumatically operating mechanism for the switch and air line control valve, and piping connecting the uncoupling mechanisms, the operating mechanisms and ,the

opeiators valves on the coupled cars to open the switch, close the control valve and operate the uncoupling mechanism on the two cars when the operators valve is operated and means to prevent the uncoupling mechanism operating on one or both cars before the switch on one or both cars has opened.

12. In a car and air coupling system on two coupled cars, each car provided with a reservoir air line, a valve therein to automatically open on impact of the cars and automatically close in both cars upon separa- `tion of the cars, a brake air line, a valve therein, pneumatic mechanism to automatically open the brake line valves upon impact and manually operated means to control the operation of the pneumatic mechanism to cause the same to close the brake valve on both cars from one car at will of the operator.

13. In a car and air coupling system for coupling two cars, a car coupler coupling on impact, a pneumatic uncoupling device on either car capable of eiecting an uncoupling,

an air line, a valve therein,y pneumatically operated mechanism to move the valve to its closed position when effecting an uncoupling, piping connecting the operating mechanism from car to car, a control valve to admit air to the piping and thence to the operating mechanism on the two cars to move the same `and close the air line valve and piping connecting the uncoupling mechanism to the rst piping and having means to control the flow of airV therein such that air can yiiow tol the uncoupling mechanism on one or both cars when the air line valve on the one or both cars is closed thus eecting an uncoupling if only one uncoupling mechanism operates.

14. In a car and air coupler system on two cars, a reservoir line and a brake line connected by the air couplers, a car coupler to couple on impact, a valve in each line on each car arranged to open automatically upon the bringing together of the cars, a pneumatic actuator for one of the valves, a valve to control the operation of the actuator to close the said one valve at willof the operator prior to uncoupling.

15. In a car and air coupler system on two coupled cars, a reservoir line and a brake line connected by the air couplers, a car coupler to couple on impact, a valve in each line on each car arranged to open automatically upon bringin the cars into coupled relation, means to c ose one of the valves by an operator at his will and said valve to remain open if the cars part accidenally and the other valve to close automatically upon normal or accidental separation of the cars.

16. Ina car, air and electric coupling system, two air line pipes, a valve in one pipe to be opened upon impact of the couplers on two cars, a switch, a valve in the other pipe, a single actuator for the switch and second valve, means to automatically control the flow of air to .the actuator to' move the actuator in one direction to close. the switch and open the valve manually operated means to move the actuator in the opposite direction to open the switch and close the valve and means comprising a car coupler to hold the air and electric coupling system in coupled relation with a companion car and to couple on impact.

17. In a car, air and electric coupling system described, a reservoir line, a valve in the lline to open on impact, a brake line, a valve in the brake line, a switch, a pneumatic uncoupling mechanism for theI car coupler, a valve controlling the operation of the uncoupling mechanism, a single pneumatic actuator for the switch, the valve in the brake line and the control valve for the uncoupling mechanism to close. the switch, open the brake line valve and close the control valve for the uncoupling mechanism and operable from the reservoir line upon the opening of the reservoir valve.

18. In a car and air coupler to connect the air brake system on two coupled cars, a reservoir line, a valve therein to open and close automatically upon impact and separation of the two cars respectively, a brake line and a valve therein, means controlled by and upon the openingl of the reservoir line valve to open the brake line valve automatically, piping connecting the various elements for said operations on the coupled cars simultaneously and a. car coupler on each car to interlock and hold the cars in coupled relation.

19. In a car and air coupler to connect the air brake system on two coupled cars, a reservoir line, a valve therein to open and close automatically upon impact and separation of the cars respectively, a brake line and a valve therein, means controlled by and upon the opening ofthe reservoir line valve to open the brake line valve automatically, piping connecting the various elements for said operations on each car when coupled and manually operated means to efect the closing of the brake line valve prior to .the separation of the cars and meanscomprising a car coupler arranged to couple automatically upon impact to hold the cars in coupled relation.

20. In a car, air and electric coupling system for connecting two cars, the air line and the electric circuits, a car coupler, an uncoupling device therefor, a train air line, a valve therein, one or more electric circuits, a switch therefor, an operating device for the switch and valve and arranged to open the switch when the valve is closed and vice versa, a piping system connectin said uncoupling device, and said operatlng device on the two cars, a control valve connected to the piping system and to a source of air to control the admission of air to the piping system, a valve in the piping system to control the How of air to the uncoupling device and controlled by the operating device to prevent air flowing to the uncoupling device on either car prior to the opening of the switch on that car, the system operating to move the operating device on one or both cars when the control valve is operated in either car.

21. In a car and air coupling system on two coupled cars, each car having a brake and a reservoir line and a car coupler, a control valve in each line, a pneumatic uncoupling mechanism for each coupler, a pneumatic actuator on each car to open and close the brake line valve, auxiliary pipes and air couplers to connect the reservoir lines, and the actuators and a valve on each car interposed between the said air couplers and reservoir lines and normally closed and charging the actuators when opened on each car to close the brake line valve, piping connecting the first piping and the uncoupling mechanism and controlled by the normally` closed valve, a valve in the last said piping to prevent air owing to the uncoupling mechanism when the normally closed valve is opened until the actuator has closed the brake line valve and means preventing the opening of the last said valve while the brake line valve is open.

22. In a car and air coupling system provided with an air line to be connected on two coupled cars, a control valve in the line, a pneumatic actuator to move the valve to its open or closed position, piping connecting the actuator to a source of air supply and having an automatic operated control device therein to open and admit air from the pipe to one end of the actuator when pressure is huilt up in the pipe t0 move the actuator to open the control valve,` other piping connecting the actuator to a source of air supplyV and having a normally closed manually operated valve therein to admit air to the other end of the-actuator when the manually operated valve is opened to move the actuator to close the control valve and piping .connected to the automatic device and to a source of air supply and controlled by the manually operated Valve to admit air to the automatic device when the manually operated valve is opened to close the automatic device and shut offair pressure to the actuator and bleed one end of the actuator to atmosphere and piping connecting the cars for simultaneous operation on both cars.

23. In a car and electric coupler for a train line circuit, a coupler contact to which the train line is attached, a switch interposed in the circuit to open or close same, pneumatic controlled means to operate the switch, a valve and pipingto control the 'admission of air to the said pneumatic means t0 operate it in one direction and automatically controlled means and piping to control the admission of air to the pneumatic means to o perate it in the opposite direction, the said automatic means automatically admitting air pressure to the pneumatic means and permitting said pressure to continue until the valve is operated to admit air to the pneumatic means whereupon the automatic means will close off the air pressure to the pneumatic means and bleed the pneumatic means to atmosphere and means to hold the coupler contact in coupled relation with a cooperating contact.

In testimony whereof I ax my signature.

ERNST A. LARssoN, 

